Explanipedia

High-pressure pathways for the formation of amorphous diamond and other tetrahedrally-bonded phases from glassy carbon Open

Alan Salek, Qingbo Sun, Xingshuo Huang, David R. McKenzie, Andrew V. Martin , et al. · 2025

Heavy-element damage seeding in proteins under XFEL illumination Open

Spencer K. Passmore, Alaric L. Sanders, Andrew V. Martin, Harry M. Quiney · 2025

Serial femtosecond X-ray crystallography (SFX) captures the structure and dynamics of biological macromolecules at high spatial and temporal resolutions. The ultrashort pulse produced by an X-ray free-electron laser (XFEL) `outruns' much o…

Probing the medium-range order of amorphous materials via the pair-angle distribution function technique Open

Alan Salek, Dougal G. McCulloch, Andrew V. Martin · 2025

Achieving Over 2000 Stable Cycles in Srcl₂/Graphene Composites for Building Thermal Energy Storage Via Optimized Synthesis Pathways Open

Ana Pérez, Andrew V. Martin, Ravi Prasher, Chris Dames, Sumanjeet Kaur · 2025

Real-space nanostructure via correlation analysis of scanning microfocus x-ray diffraction data Open

Stefan Paporakis, Michael Hasset, Patrick W. Adams, Jack Binns, Cameron M. Kewish , et al. · 2025

Heavy-element damage seeding in proteins under XFEL illumination Open

Spencer K. Passmore, Alaric L. Sanders, Andrew V. Martin, Harry M. Quiney · 2024

Serial femtosecond X-ray crystallography (SFX) captures the structure and dynamics of biological macromolecules at high spatial and temporal resolutions. The ultrashort pulse produced by an X-ray free electron laser (XFEL) 'outruns' much o…

Microsecond time-resolved X-ray scattering by utilizing MHz repetition rate at second-generation XFELs Open

Sebastian Westenhoff, Patrick Konold, Leonardo Monrroy, Alfredo Bellisario, Diogo de Matos Filipe , et al. · 2023

Detecting microsecond structural perturbations in biomolecules has wide relevance in biology, chemistry, and medicine. Here, we show how MHz repetition rates at X-ray free electron lasers (XFELs) can be used to produce microsecond time-ser…

The pypadf package: computing the pair-angle distribution function from fluctuation scattering data Open

Andrew V. Martin, Patrick Adams, Jack Binns · 2023

The pair-angle distribution function (PADF) is a three- and four-atom correlation function that can characterise the local angular structure of disordered materials, particles or nanocrystalline materials. The PADF can be measured by x-ray…

Femtosecond imaging of giant-hemeprotein with XFEL pulses Open

P. Lourdu Xavier, Ajda Kunavar, Julia Maracke, Frédéric Poitevin, Patrick W. Adams , et al. · 2023

Megahertz pulse trains enable multi-hit serial femtosecond crystallography experiments at X-ray free electron lasers Open

Susannah Holmes, Henry Kirkwood, Richard Bean, Klaus Giewekemeyer, Andrew V. Martin , et al. · 2022

Numerical investigation of the logarithmic Schrödinger model of quantum decoherence Open

Rory van Geleuken, Andrew V. Martin · 2022

A logarithmic Schrödinger equation with time-dependent coupling to the non-linearity is presented as a model of collisional decoherence of the wavefunction of a quantum particle in position-space. The particular mathematical form of the lo…

Observations of phase changes in monoolein during high viscous injection Open

D. Wells, Peter Berntsen, Eugeniu Balaur, Cameron M. Kewish, Patrick Adams , et al. · 2022

Serial crystallography of membrane proteins often employs high-viscosity injectors (HVIs) to deliver micrometre-sized crystals to the X-ray beam. Typically, the carrier medium is a lipidic cubic phase (LCP) media, which can also be used to…

Numerical investigation of the logarithmic Schr\\"odinger model of\n quantum decoherence Open

Rory van Geleuken, Andrew V. Martin · 2021

A logarithmic Schr\\"odinger equation with time-dependent coupling to the\nnon-linearity is presented as a model of collisional decoherence of the\nwavefunction of a quantum particle in position-space. The particular\nmathematical form of …

Using the pair angle distribution function for analysing protein structure Open

Patrick Adams, Jack Binns, Tamar L. Greaves, Andrew V. Martin · 2021

X-Ray Free Electron Lasers provide a means of conducting crystallography experiments with remarkable time and spatial resolution.These methods can directly recover the electron density of materials.However, there are stringent requirements…

Conditional wave theory of environmental interactions with a quantum particle Open

Rory van Geleuken, Andrew V. Martin · 2020

We present an alternative formulation of quantum decoherence theory using conditional wave theory (CWT), which was originally developed in molecular physics (also known as exact factorization methods). We formulate a CWT of a classic model…

Structural Heterogeneity in Single Particle Imaging\nUsing X‑ray Lasers Open

Thomas Mandl, Christofer Östlin, Ibrahim Dawod, Maxim N. Brodmerkel, Erik G. Marklund , et al. · 2020

One of the challenges\nfacing single particle imaging with ultrafast\nX-ray pulses is the structural heterogeneity of the sample to be imaged.\nFor the method to succeed with weakly scattering samples, the diffracted\nimages from a large n…

Hybrid Plasma/Molecular-Dynamics Approach for Efficient XFEL Radiation Damage Simulations Open

Alexander Kozlov, Andrew V. Martin, Harry M. Quiney · 2020

X-ray free-electron laser pulses initiate a complex series of changes to the electronic and nuclear structure of matter on femtosecond timescales. These damage processes include widespread ionization, the formation of a quasi-plasma state …

Structural dynamics in proteins induced by and probed with X-ray free-electron laser pulses Open

Karol Nass, A. Gorel, Malik Muhammad Abdullah, Andrew V. Martin, Marco Kloos , et al. · 2020

Research Data Management @ RMIT Open

Sam Gibbard, Andrew V. Martin, Adam Rivett, Dinesh Kumar · 2020

Video and slide decks from information session covering all aspects of Research Data Management @ RMIT: storage, collaboration, and sharing. Plus hear from two current RMIT Researchers, Professor Dinesh Kumar, and Dr. Andrew Martin about h…

Is radiation damage the limiting factor in high-resolution single particle imaging with X-ray free-electron lasers? Open

Christofer Östlin, Nicuşor Tı̂mneanu, Carl Caleman, Andrew V. Martin · 2019

The prospect of single particle imaging with atomic resolution is one of the scientific drivers for the development of X-ray free-electron lasers. The assumption since the beginning has been that damage to the sample caused by intense X-ra…

Signal-to-noise, spatial resolution and information capacity of coherent diffraction imaging Open

Timur E. Gureyev, Alexander Kozlov, Yakov I. Nesterets, David M. Paganin, Andrew V. Martin , et al. · 2018

It is shown that the average signal-to-noise ratio (SNR) in the three-dimensional electron-density distribution of a sample reconstructed by coherent diffractive imaging cannot exceed twice the square root of the ratio of the mean total nu…

Nanocrystallography measurements of early stage synthetic malaria pigment Open

Ruben A. Dilanian, Victor A. Streltsov, Hannah D. Coughlan, Harry M. Quiney, Andrew V. Martin , et al. · 2017

The recent availability of extremely intense, femtosecond X-ray free-electron laser (XFEL) sources has spurred the development of serial femtosecond nanocrystallography (SFX). Here, SFX is used to analyze nanoscale crystals of β-hematin, t…

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene Open

Rebecca Ryan, Sophie Williams, Andrew V. Martin, Ruben A. Dilanian, Connie Darmanin , et al. · 2017

The precise details of the interaction of intense X-ray pulses with matter are a topic of intense interest to researchers attempting to interpret the results of femtosecond X-ray free electron laser (XFEL) experiments. An increasing number…

Analysis of Diffracted Intensities from Finite Protein Crystals with Incomplete Unit Cells Open

Sophie Williams, Ruben A. Dilanian, Harry M. Quiney, Andrew V. Martin · 2017

Developments in experimental techniques in micro electron diffraction and serial X-ray crystallography provide the opportunity to collect diffraction data from protein nanocrystals. Incomplete unit cells on the surfaces of protein crystals…

Orientational order of liquids and glasses<i>via</i>fluctuation diffraction Open

Andrew V. Martin · 2016

Liquids, glasses and other amorphous matter lack long-range order, which makes them notoriously difficult to study. Local atomic order is partially revealed by measuring the distribution of pairwise atomic distances, but this measurement i…

A data set from flash X-ray imaging of carboxysomes Open

Max F. Hantke, Dirk Hasse, Tomas Ekeberg, Katja John, Martin Svenda , et al. · 2016

Single-shot diffraction data from the Mimivirus particle using an X-ray free-electron laser Open

Tomas Ekeberg, Martin Svenda, M. Seibert, Chantal Abergel, Filipe R. N. C. Maia , et al. · 2016

Free-electron lasers (FEL) hold the potential to revolutionize structural biology by producing X-ray pules short enough to outrun radiation damage, thus allowing imaging of biological samples without the limitation from radiation damage. T…

Open data set of live cyanobacterial cells imaged using an X-ray laser Open

Gijs van der Schot, Martin Svenda, Filipe R. N. C. Maia, Max F. Hantke, Daniel P. DePonte , et al. · 2016

Whole-pattern fitting technique in serial femtosecond nanocrystallography Open

Ruben A. Dilanian, Sophie Williams, Andrew V. Martin, Victor A. Streltsov, Harry M. Quiney · 2016

Serial femtosecond X-ray crystallography (SFX) has created new opportunities in the field of structural analysis of protein nanocrystals. The intensity and timescale characteristics of the X-ray free-electron laser sources used in SFX expe…

A spherical harmonic approach to single particle imaging with X-ray lasers Open

Julien Flamant, Nicolas Le Bihan, Andrew V. Martin, Jonathan H. Manton · 2016

In 3D single particle imaging with X-ray free-electron lasers, particle orientation is not recorded during measurement but is instead recovered as a necessary step in the reconstruction of a 3D image from the diffraction data. Here we use …

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